FEMA Records
1
Total declarations
Wisconsin · FEMA + NOAA + National Risk Index
Winnebago County, WI
1 FEMA disaster declarations (2026–2026), with a FEMA National Risk Index rating of Relatively Moderate. Most common hazard: Flood.
- 1
- FEMA declarations
- 1
- Major disasters
- 87
- NRI risk · Relatively Moderate
- Flood
- Top hazard
The verdict
Winnebago County ranks in the riskiest 13% of U.S. counties for FEMA-modeled hazard risk, with more federally declared disasters than 0% of the 2,791 counties FEMA tracks. FEMA rates the county's overall risk as Relatively Moderate, based on 1 federal disaster declarations recorded since 2026, most often flood, 74% below the national county average of 4.
- Riskiest 13%
- of U.S. counties for FEMA National Risk Index score
- Relatively Moderate
- FEMA National Risk Index rating
- 1
- FEMA declarations vs 4 national county avg
- 1
- flood declarations, the most common hazard here
FEMA's National Risk Index score reflects expected annual loss, social vulnerability, and community resilience; the declaration count above reflects only Presidentially declared disasters, not every hazard event.
How does Winnebago County compare?
Winnebago County vs. every U.S. county
FEMA disaster declarations, all-time
1 0th percentile higher than 0% of 2,791 counties
Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source FEMA Disaster Declarations Summaries v2 · 2026-07-25
Winnebago County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the Wisconsin county average
How disaster-prone is Winnebago County?
Declaration frequency
Winnebago County, Wisconsin has recorded 1 FEMA disaster declarations between 2026 and 2026, of which 1 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at - declarations per year, or roughly 22% below the Wisconsin county average of 1.3 and 74% below the national county average of 3.8. The dominant disaster type on record is Flood, with 1 of 1 declarations falling under this category.
FEMA National Risk Index
This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 86.8/100 (Relatively Moderate). Expected Annual Loss is rated Relatively Moderate (roughly $75.3M in annualized losses). Social vulnerability reads Relatively Low and community resilience Very High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Cold Wave stands out as the sharpest exposure here, rated Relatively High.
Flood exposure & the bottom line
Taken together, Winnebago County's federal disaster history is about as quiet as U.S. counties get, a very low relative risk level on this measure.
Risk Assessment
Risk Level
Very Low
vs. Wisconsin Avg
-22%
State avg: 1.3
vs. National Avg
-74%
National avg: 3.8
Avg Per Year
-
-
FEMA NRI 8-hazard radar - Winnebago County
How to read this radar
The radar plots Winnebago County's relative exposure to the eight headline natural hazards used by the FEMA National Risk Index. Each axis is the qualitative NRI risk rating (Very Low through Very High) re-expressed on a 0-100 scale so that the polygon shape lets you compare a county against another at a glance. A rounder polygon means broad multi-hazard exposure; a spiky polygon means one or two dominant hazards drive most of the modeled risk.
NRI Source
FEMA 2023
Latest NRI release
County FIPS
55139
WI state code
Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release
Disaster Types
Flood 1
Declaration Types
What DR / EM / FM mean
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Major Disaster - 1 100.0%
of all 1 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2026 | 1 | |
Disaster Declarations
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 4923 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Flood | 2026-06-30 |
Storm Events in Wisconsin
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 4,156 | 6 | 29 | $47.9M |
| Hail | 3,280 | 0 | 0 | $58.6M |
| Winter Weather | 2,434 | 44 | 152 | $2.1M |
| Winter Storm | 1,545 | 16 | 88 | $2.4M |
| Heavy Snow | 855 | 2 | 3 | $490.0K |
Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025
FEMA National Risk Index
Overall Risk
Relatively Moderate
Score: 86.8/100
Expected Annual Loss
Relatively Moderate
$75.3M/year
Social Vulnerability
Relatively Low
Community Resilience
Very High
Hazard Risk Breakdown
Cold Wave Relatively High
Strong Wind Relatively High
Hail Relatively Moderate
Tornado Relatively High
Lightning Relatively High
Winter Weather Relatively Moderate
Heat Wave Relatively Low
Ice Storm Relatively Low
Wildfire Very Low
Earthquake Very Low
Drought Very Low
Landslide Very Low
Hurricane Very Low
Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri
Counties with Similar Risk in Wisconsin
Disaster Preparedness Guides
Related
Frequently Asked Questions
How many natural disasters has Winnebago County, Wisconsin had?
Winnebago County, Wisconsin has received 1 FEMA disaster declarations from 2026 to 2026. Of these, 1 were major disaster declarations.
What is the most common disaster type in Winnebago County?
The most common disaster type in Winnebago County is Flood, with 1 declaration.
How does Winnebago County's disaster risk compare to the Wisconsin average?
Winnebago County has 1 disaster declarations, which is 22% lower than the Wisconsin county average of 1.3 declarations. Compared to the national county average of 3.8, it is 74% lower.
How many major FEMA disaster declarations has Winnebago County received?
Winnebago County has received 1 major disaster declaration, representing 100% of all 1 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in Wisconsin?
The most common storm types in Wisconsin include Thunderstorm Wind (4,156 events), Hail (3,280 events), Winter Weather (2,434 events). NOAA storm event data covers severe weather from 2015 to 2025.
What is the overall disaster risk level for Winnebago County?
Winnebago County has just 1 FEMA disaster declaration on record, placing it in the very-low-risk band, among the quieter counties in FEMA's declaration history.
What is the FEMA National Risk Index score for Winnebago County?
According to the FEMA National Risk Index, Winnebago County, Wisconsin has an overall risk score of 86.8 out of 100 (Relatively Moderate). The county's social vulnerability rating is Relatively Low and community resilience is Very High. The Expected Annual Loss (EAL) score is Relatively Moderate, representing $75.3M in annualized losses.
Which natural hazard poses the greatest risk to Winnebago County?
Based on FEMA NRI data, the highest-risk natural hazard in Winnebago County is Cold Wave (risk rating: Relatively High). Other significant hazards include Strong Wind (Relatively High) and Hail (Relatively Moderate). These scores are based on FEMA's analysis of historical event frequency, exposed assets, and community vulnerability.
Data Sources & Methodology
Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.
Storm event data is sourced from the NOAA Storm Events Database (2015–2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.
This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.
What this means for Winnebago County
Winnebago County, WI runs 22% below the Wisconsin county average for federal disaster declarations (1 vs 1), a very low historical load overall.
- Its most common federal declaration type is major disaster (1 of 1) - know the hazards most likely here before they happen. Wisconsin overview
- See how this county ranks against the rest of the country for disaster frequency. Most-disaster rankings
- Read how to read FEMA declarations, NRI risk scores, and what they do and don't tell you. Disaster-data guide
Historical declaration counts describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.
According to the Federal Emergency Management Agency, this profile draws on 2,791 tracked U.S. counties in FEMA's Disaster Declarations Summaries dataset, refreshed as of 2026-07-25. Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015–2025. ncdc.noaa.gov/stormevents
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial
Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. This page draws directly on FEMA federal disaster data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, or report a data error.